st

fork of suckless's simple terminal
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commit f74a9df6e1fc88eebe6d673d888b61fd83cf6fc4
parent 818ec746f4caae453d09368b101c3e841cf39870
Author: Hiltjo Posthuma <hiltjo@codemadness.org>
Date:   Wed, 17 Jun 2020 22:05:48 +0200

remove sixel stub code

Remove stub code that was used for an experiment of adding sixel code to st
from the commit f7398434.

Diffstat:
Mst.c | 26+++++---------------------
1 file changed, 5 insertions(+), 21 deletions(-)
diff --git a/st.c b/st.c
@@ -51,7 +51,6 @@ enum term_mode {
     MODE_ECHO        = 1 << 4,
     MODE_PRINT       = 1 << 5,
     MODE_UTF8        = 1 << 6,
-    MODE_SIXEL       = 1 << 7,
 };
 
 enum cursor_movement {
@@ -78,12 +77,11 @@ enum charset {
 enum escape_state {
     ESC_START      = 1,
     ESC_CSI        = 2,
-    ESC_STR        = 4,  /* OSC, PM, APC */
+    ESC_STR        = 4,  /* DCS, OSC, PM, APC */
     ESC_ALTCHARSET = 8,
     ESC_STR_END    = 16, /* a final string was encountered */
     ESC_TEST       = 32, /* Enter in test mode */
     ESC_UTF8       = 64,
-    ESC_DCS        =128,
 };
 
 typedef struct {
@@ -2090,12 +2088,9 @@ tdectest(char c)
 void
 tstrsequence(uchar c)
 {
-    strreset();
-
     switch (c) {
     case 0x90:   /* DCS -- Device Control String */
         c = 'P';
-        term.esc |= ESC_DCS;
         break;
     case 0x9f:   /* APC -- Application Program Command */
         c = '_';
@@ -2107,6 +2102,7 @@ tstrsequence(uchar c)
         c = ']';
         break;
     }
+    strreset();
     strescseq.type = c;
     term.esc |= ESC_STR;
 }
@@ -2304,7 +2300,7 @@ tputc(Rune u)
     Glyph *gp;
 
     control = ISCONTROL(u);
-    if (u < 127 || !IS_SET(MODE_UTF8 | MODE_SIXEL)) {
+    if (u < 127 || !IS_SET(MODE_UTF8)) {
         c[0] = u;
         width = len = 1;
     } else {
@@ -2325,23 +2321,11 @@ tputc(Rune u)
     if (term.esc & ESC_STR) {
         if (u == '\a' || u == 030 || u == 032 || u == 033 ||
            ISCONTROLC1(u)) {
-            term.esc &= ~(ESC_START|ESC_STR|ESC_DCS);
-            if (IS_SET(MODE_SIXEL)) {
-                /* TODO: render sixel */;
-                term.mode &= ~MODE_SIXEL;
-                return;
-            }
+            term.esc &= ~(ESC_START|ESC_STR);
             term.esc |= ESC_STR_END;
             goto check_control_code;
         }
 
-        if (IS_SET(MODE_SIXEL)) {
-            /* TODO: implement sixel mode */
-            return;
-        }
-        if (term.esc&ESC_DCS && strescseq.len == 0 && u == 'q')
-            term.mode |= MODE_SIXEL;
-
         if (strescseq.len+len >= strescseq.siz) {
             /*
              * Here is a bug in terminals. If the user never sends
@@ -2453,7 +2437,7 @@ twrite(const char *buf, int buflen, int show_ctrl)
     int n;
 
     for (n = 0; n < buflen; n += charsize) {
-        if (IS_SET(MODE_UTF8) && !IS_SET(MODE_SIXEL)) {
+        if (IS_SET(MODE_UTF8)) {
             /* process a complete utf8 char */
             charsize = utf8decode(buf + n, &u, buflen - n);
             if (charsize == 0)